Shading: Add more operators to Vector Math node.

Add Multiply, Divide, Project, Reflect, Distance, Length, Scale, Snap,
Floor, Ceil, Modulo, Fraction, Absolute, Minimum, and Maximum operators
to the Vector Math node. The Value output has been removed from operators
whose output is a vector, and the other way around. All of those removals
has been handled properly in versioning code.

The patch doesn't include tests for the new operators. Tests will be added
in a later patch.

Reviewers: brecht, JacquesLucke

Differential Revision: https://developer.blender.org/D5523

1 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_listbase.h b/source/blender/blenlib/BLI_listbase.h
index c235a72e7e4..b8b62dd3451 100644
--- a/source/blender/blenlib/BLI_listbase.h
+++ b/source/blender/blenlib/BLI_listbase.h
@@ -171,12 +171,21 @@ struct LinkData *BLI_genericNodeN(void *data);
 #define LISTBASE_FOREACH(type, var, list) \
   for (type var = (type)((list)->first); var != NULL; var = (type)(((Link *)(var))->next))
 
+#define LISTBASE_FOREACH_BACKWARD(type, var, list) \
+  for (type var = (type)((list)->last); var != NULL; var = (type)(((Link *)(var))->prev))
+
 /** A version of #LISTBASE_FOREACH that supports removing the item we're looping over. */
 #define LISTBASE_FOREACH_MUTABLE(type, var, list) \
   for (type var = (type)((list)->first), *var##_iter_next; \
        ((var != NULL) ? ((void)(var##_iter_next = (type)(((Link *)(var))->next)), 1) : 0); \
        var = var##_iter_next)
 
+/** A version of #LISTBASE_FOREACH_BACKWARD that supports removing the item we're looping over. */
+#define LISTBASE_FOREACH_BACKWARD_MUTABLE(type, var, list) \
+  for (type var = (type)((list)->last), *var##_iter_prev; \
+       ((var != NULL) ? ((void)(var##_iter_prev = (type)(((Link *)(var))->prev)), 1) : 0); \
+       var = var##_iter_prev)
+
 #ifdef __cplusplus
 }
 #endif